India's civil aviation regulator has launched an investigation after the wingtips of two passenger aircraft briefly came into contact on a runway at Mumbai airport, prompting an evacuation of passengers. The Directorate General of Civil Aviation (DGCA) said an Air India aircraft was awaiting departure when an IndiGo plane, taxiing on a parallel route after landing, scraped the tip of its wing. "The right wingtips of both aircraft touched each other," the regulator said. Both airlines confirmed